patsS14

if i bought cp pistons 87mm 8:5:1 cr would it be smart to invest in darton sleeves and what would be the best headgasket.

di-devol

I think 87mm is the highest you can go without sleeves, I wouldn't stress in it.

AsleepAltima

doing lots of research on this a couple years ago, i found that there are companies building 88mm non sleeved engines with no problems. one dude was building 87.5 turbo apps and wasnt having any problems either. a few machine shops said that with the thickness of the stock cylinder walls, they didnt see a problem with an 88mm piston. i have 87mm cp pistons, no sleeves and a cosworth hg. im running 15lbs of boost until it breaks in. i dont foresee any problems with it either.

cbcm2435

check out power enterprise gaskets

Pinggg

Apexi/Cosworth M.H.G. Many people on here can vouch for it.

fliprayzin240sx

Apex or Tomei HG and make sure the oil pump cover is milled down to match the block.

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run_jdm_nismoS14

i have a 98 s14 sr20det blacktop, my air/fuel idles at 15.8-16.5 and it spits black smoke and sputters like crazy iv dropped im boosting only 7 pounds right now till i figure out im problem.. i did have it at 15psi and it would sputter and shit all over its self and boost and then fuel cut.. i put a 255lph and no difference... iv been told it was my maf but just looking for a good appion.. im new to the sr20det world so any help or advise would work

pacotaco345

how does this apply to the original post?

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ShadowMan

I finished my sr20det rebuild a few months back. Stock rebuild so couldn't help you with the piston/sleeve question but I went with the apex hg. After all the searching and calling people it was the best option in my opinion, but I'm a self taught wanabe mechanic and this was my first engine tear down/rebuild, didn't think to have the oil pump/timing chain milled down with block either, but so far so good. I also didn't use the copper spray adhesive stuff either, seemed that stuff is hit or miss depending on who you talk to. Its your head gasket, don't cheap out on it, or you'll be doing it all over again. good luck.

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go with cosworth. I've had 3 and not one gave me problems on my 400whp SR. (3 completely different engines). as a matter fact, i reused one, one time and thats the one i made 400whp with. its cheeper than apexi and its a great product.